How do I increase my combi boiler hot water temperature above 60*?

Ferolli Maxima 35C. Good animal, had it for 3 years but it niggles me that the DHW is limited to about 60 degrees. Water to CH is in excess of 80 degrees. Trawled the net but no info other than min temp 55* for bacteria & max 60* for safety which, I presume this must be set either in the programming software, the firmware or with an actual physical thermal detect device. Why should I want water hotter? everyone replies. Ever laid in the bath for a while & then want to top up the heat for a bit longer soak? 60* won't do. Sometimes I wish I still had the old cylinder with 68 / 70* to draw from.